Development of binders based on the СаО–Fe2O3 system DOI Open Access

В Н Деревянко,

Hanna Hryshko,

Denis Smolin

et al.

Eastern-European Journal of Enterprise Technologies, Journal Year: 2024, Volume and Issue: 4(6 (130)), P. 49 - 58

Published: Aug. 30, 2024

The object of research is the processes structure formation and modeling properties a specialized binder. development new binding materials based on production waste with high early strength indicators could make it possible to speed up construction period one urgent tasks at present. This study focused creation binders СаО–Fe2O3 system. developed binder system has following composition: limestone – 26 %; red slime 74 %, which dense fine-porous 22.5 MPa density 1960 kg/m3. There also an increase in average samples annealed temperature 1200 ℃ for 60 minutes, ground mixed water, comparison fired 1100 by 500 kg/m3, due formations. prospect using modified composite special functional been substantiated. use СаО-Fe2O3 obtain physical mechanical properties, makes them promising application various areas industry. such will help reduce environmental impact industry, owing affordable effective components. approach not only contribute improvement quality building but ecological burden environment alternative resources industrial waste. be used solutions 3d printing, as well repair concrete coatings

Language: Английский

A Review on the Carbonation of Steel Slag: Properties, Mechanism, and Application DOI Open Access
Shuping Wang, Mingda Wang, Fang Liu

et al.

Materials, Journal Year: 2024, Volume and Issue: 17(9), P. 2066 - 2066

Published: April 28, 2024

Steel slag is a by-product of the steel industry and usually contains high amount f-CaO f-MgO, which will result in serious soundness problems once used as binding material and/or aggregates. To relieve this negative effect, carbonation treatment was believed to be one available reliable methods. By slag, phases f-MgO can effectively transformed into CaCO3 MgCO3, respectively. This not only reduce expansive risk improve utilization further but also capture store CO2 due mineralization process carbon emissions. In study, based on physical chemical properties mechanism, factors affecting process, application carbonated were reviewed. Eventually, research challenge discussed.

Language: Английский

Citations

11
An effective strategy for preparing fluxed metallized pellets from converter slag: Synergistic mechanism and consolidation behavior DOI

Shanshan Wen,

Sibo Shen, Lihua Gao

et al.

Journal of environmental chemical engineering, Journal Year: 2025, Volume and Issue: unknown, P. 116188 - 116188

Published: March 1, 2025

Language: Английский

Citations

0
Ecotoxicological Study of Tannic Acid on Soil and Water Non-Target Indicators and Its Impact on Fluvial and Edaphic Communities DOI Creative Commons
María Rosa Pino-Otín,

Guillermo Lorca,

Jonatan Val

et al.

Plants, Journal Year: 2023, Volume and Issue: 12(23), P. 4041 - 4041

Published: Nov. 30, 2023

Tannic acid (TA) is a key tannin extensively used in the leather industry, contributing to around 90% of global production. This practice leads generation highly polluting effluents, causing environmental harm aquatic ecosystems. Additionally, tannins like TA degrade slowly under natural conditions. Despite efforts reduce pollutant limited attention has been devoted direct impact tannins. Moreover, garnered increased mainly due its applications as an antibacterial agent and anti-carcinogenic compound. However, our understanding ecotoxicological effects remains incomplete. study addresses this knowledge gap by assessing ecotoxicity on non-target indicator organisms both water (Vibrio fischeri, Daphnia magna) soil environments (Eisenia foetida, Allium cepa), well fluvial edaphic communities, including periphyton. Our findings offer valuable insights into TA's across various trophic levels, underscoring need for more comprehensive investigations complex results demonstrate that exhibits towards specific organisms, particularly V. fischeri D. magna, phytotoxicity A. cepa. The severity these varies, with being most sensitive, followed magna soil-dwelling invertebrate E. foetida shows resistance tested concentrations. Furthermore, research reveals substantial concentrations are required growth river microbial communities. Metabolic changes, amino amine metabolism, observed at lower Notably, photosynthetic yield periphyton unaffected, even higher In contrast, communities exhibit greater sensitivity, significant alterations population metabolic profiles very low concentration 0.2 mg/L all metabolites. summary, offers terrestrial environments. It underscores importance considering variety when implications

Language: Английский

Citations

7
Ecotoxicological assessment of waste foundry sands and the application of different classification systems DOI Creative Commons
Carlotta Alias, Flavio Cioli, Alessandro Abbà

et al.

Integrated Environmental Assessment and Management, Journal Year: 2024, Volume and Issue: unknown

Published: Aug. 30, 2024

The application of a battery bioassays is widely recognized as useful tool for assessing environmental hazard samples. However, the integration different toxicity data key aspect this assessment and remains challenge. evaluation industrial waste leachates did not initially undergo any proposed procedures. This research addressed knowledge gap. Twenty-five samples foundry sands were subjected to leaching test (UNI EN 12457-2) evaluate recovery landfill disposal. evaluated using standardized composed Aliivibrio fischeri (EN ISO 11348-3), Daphnia magna 6341), Pseudokirchneriella subcapitata 8692), both undiluted diluted. P. most affected organisms, with significant effects caused by 68% 64% samples, respectively. dilution facilitates calculation EC50 values, which ranged from greater than highest concentration tested 2.5 g/L subcapitata. on single-organism integrated three methods: Toxicity Classification System, index, EcoScore system. classifications strongly similar. According all applied systems, clearly nontoxic (from iron casting plants) two highly toxic steel plants). Moreover, similar ranking between diluted suggests possibility only more cost-effective time-efficient screening materials. findings study highlight usefulness integrating ecotoxicological assessment. Integr Environ Assess Manag 2024;00:1-18. © 2024 Author(s). Integrated Environmental Assessment Management published Wiley Periodicals LLC behalf Society Toxicology & Chemistry (SETAC).

Language: Английский

Citations

2
Evaluation of Toxicity and Genotoxicity of Concrete Cast with Steel Slags Using Higher Terrestrial Plants DOI Creative Commons
Carlotta Alias, Giovanna Piovani, Laura Benassi

et al.

Environmental Toxicology and Chemistry, Journal Year: 2023, Volume and Issue: 42(10), P. 2193 - 2200

Published: July 4, 2023

The potential impact of concrete mixtures containing steel slag (SS) as a partial replacement natural aggregates (NA) on the terrestrial ecosystem was assessed using battery plant-based bioassays. Leaching tests were conducted four and one mixture only NA (reference concrete). Leachates tested for phytotoxicity seeds Lepidium sativum, Cucumis sativus, Allium cepa. Emerging seedlings L. sativum A. cepa used to assess DNA damage (comet test). genotoxicity leachates also analyzed with bulbs comet chromosome aberration tests. None samples caused phytotoxic effects. On contrary, almost all supported seedlings; two leachates, from SS-containing other reference concrete, promoted growth C. sativus significantly increased by sample. In contrast, in enhanced but that sample SS. Furthermore, an increase chromosomal aberrations bulbs. Despite some genotoxic effects plant cells, SS does not seem make more hazardous than suggesting use reliable recycled material. Environ Toxicol Chem 2023;42:2193-2200. © 2023 Authors. Environmental Toxicology Chemistry published Wiley Periodicals LLC behalf SETAC.

Language: Английский

Citations

4
Development of binders based on the СаО–Fe2O3 system DOI Open Access

В Н Деревянко,

Hanna Hryshko,

Denis Smolin

et al.

Eastern-European Journal of Enterprise Technologies, Journal Year: 2024, Volume and Issue: 4(6 (130)), P. 49 - 58

Published: Aug. 30, 2024

The object of research is the processes structure formation and modeling properties a specialized binder. development new binding materials based on production waste with high early strength indicators could make it possible to speed up construction period one urgent tasks at present. This study focused creation binders СаО–Fe2O3 system. developed binder system has following composition: limestone – 26 %; red slime 74 %, which dense fine-porous 22.5 MPa density 1960 kg/m3. There also an increase in average samples annealed temperature 1200 ℃ for 60 minutes, ground mixed water, comparison fired 1100 by 500 kg/m3, due formations. prospect using modified composite special functional been substantiated. use СаО-Fe2O3 obtain physical mechanical properties, makes them promising application various areas industry. such will help reduce environmental impact industry, owing affordable effective components. approach not only contribute improvement quality building but ecological burden environment alternative resources industrial waste. be used solutions 3d printing, as well repair concrete coatings

Language: Английский

Citations

0